Gibraltar 43814G Thumb Screw 12L14 Steel 1/2-13 Knurled Head

Product Description

The GIBRALTAR 43814G is a 12L14 steel thumb screw with a knurled head and dog tip, designed for applications requiring tool-free hand tightening. It features a 1/2-13 UNC thread and a black oxide finish that provides mild corrosion resistance in light-duty service environments. The knurled head allows secure finger grip for frequent adjustments, while the dog tip aids in controlled engagement with mating parts. This fastener is suitable for mechanical assemblies, fixtures, and equipment panels where repeated manual adjustment is part of normal operation. Installation does not require power tools under typical conditions.

This thumb screw is used in industrial, mechanical, and trade equipment applications where a 1/2-13 UNC thread pattern is specified. The without-shoulder design and dog tip make it appropriate for stop or positioning functions in jigs, fixtures, and adjustment mechanisms. The black oxide finish is compatible with light-duty indoor mechanical environments. It is sold individually and appropriate for both original equipment assembly and field service replacement work.

Key Features

• 12L14 steel construction with black oxide finish for light corrosion resistance
• 1/2-13 UNC thread standard for broad compatibility with inch-series hardware
• Knurled head design enables tool-free hand tightening and adjustment
• Dog tip with 11/32-inch diameter suits stop and positioning applications
• Without-shoulder body style for direct thread engagement
• Meets TCMAI standards

Compatibility

Designed for use in mechanical assemblies, fixtures, and equipment requiring a 1/2-13 UNC thumb screw with a knurled head and dog tip in 12L14 steel.

Installation Notes

This thumb screw is typically installed by machinists, millwrights, or maintenance technicians during equipment assembly or field service. Ensure the mating threaded hole or insert is clean and free of debris before installation. Hand-tighten only to the torque appropriate for your application and material — do not use power tools unless the application explicitly requires it. Verify thread engagement depth meets the requirements of your assembly specification.